KCNMB3 and glioma: The REpository of Molecular BRAin Neoplasia DaTa (REMBRANDT) glioma database indicates that the KCNMB3 gene, encoding the KCa1.1 β3 subunit, is expressed in a higher copy number in high-grade gliomas leading to a poorer prognosis compared to tumors expressing KCNMB2, the gene encoding the β2 subunit10.